#!/bin/bash
# scsi_mandat
#
# Script to test compliance with SCSI mandatory commands.
# The vintage is SPC-3 and SPC-4 (see www.t10.org).
#
# Coverage:
# Command                Standard/Draft (is mandatory in)
# -------------------------------------------------------
# INQUIRY (standard)     SCSI-2, SPC, SPC-2, SPC-3, SPC-4
# INQUIRY (VPD pages 0, 0x83)     SPC-2, SPC-3, SPC-4
# REPORT LUNS            SPC-3, SPC-4
# TEST UNIT READY        SCSI-2, SPC, SPC-2, SPC-3, SPC-4
# REQUEST SENSE          SCSI-2, SBC, SBC-2,3, MMC-4,5, SSC-2,3
# SEND DIAGNOSTIC        SBC, SBC-2,3, SSC-2,3
#
# This script uses utilities frim sg3_utils package (version
# 1.21 or later)
#
# Douglas Gilbert 20131016


log=0
quiet=0
verbose=""

file_err=0
inv_opcode=0
illeg_req=0
not_ready=0
medium=0
other_err=0
recovered=0
sanity=0
syntax=0
timeout=0
unit_attention=0
aborted_command=0

## total_err=0

usage()
{
  echo "Usage: scsi_mandat [-h] [-L] [-q] [-v] <device>"
  echo "  where:  -h, --help        print usage message"
  echo "          -L, --log         append stderr to 'scsi_mandat.err'"
  echo "          -q, --quiet       suppress some output"
  echo "          -v, --verbose     increase verbosity of output"
  echo ""
  echo "Check <device> for mandatory SCSI command support"
}


opt="$1"
while test ! -z "$opt" -a -z "${opt##-*}"; do
  opt=${opt#-}
  case "$opt" in
    h|-help) usage ; exit 0 ;;
    L|-log) let log=$log+1 ;;
    q|-quiet) let quiet=$quiet+1 ;;
    v|-verbose) verbose="-v" ;;
    vv) verbose="-vv" ;;
    vvv) verbose="-vvv" ;;
    *) echo "Unknown option: -$opt " ; exit 1 ;;
  esac
  shift
  opt="$1"
done

if [ $# -lt 1 ]
  then
    usage
    exit 1
fi

for command in "sg_inq" "sg_luns" "sg_turs" "sg_requests" "sg_vpd" \
                "sg_vpd -i" "sg_senddiag -t"
do
  if [ $quiet -eq 0 ]
    then echo "$command" $verbose "$1"
  fi

  if [ $verbose ]
  then
    if [ $log -eq 0 ]
    then
      $command $verbose "$1"
    else
      $command $verbose "$1" >> scsi_mandat.err 2>> scsi_mandat.err
    fi
  else
    if [ $log -eq 0 ]
    then
      $command "$1" > /dev/null 2>> /dev/null
    else
      $command "$1" > /dev/null 2>> scsi_mandat.err
    fi
  fi
  res=$?
  case "$res" in
    0) ;;
    1) echo "  syntax error" ; let syntax=$syntax+1 ;;
    2) echo "  not ready" ; let not_ready=$not_ready+1 ;;
    3) echo "  medium error" ; let medium=$medium+1 ;;
    5) echo "  illegal request, general" ; let illeg_req=$illeg_req+1 ;;
    6) echo "  unit attention" ; let unit_attention=$unit_attention+1 ;;
    9) echo "  illegal request, invalid opcode" ; let inv_opcode=$inv_opcode+1 ;;
    11) echo "  aborted command" ; let aborted_command=$aborted_command+1 ;;
    15) echo "  file error with $1 " ; let file_err=$file_err+1 ;;
    20) echo "  no sense" ; let other_err=$other_err+1 ;;
    21) echo "  recovered error" ; let recovered=$recovered+1 ;;
    33) echo "  timeout" ; let timeout=$timeout+1 ;;
    97) echo "  response fails sanity" ; let sanity=$sanity+1 ;;
    98) echo "  other SCSI error" ; let other_err=$other_err+1 ;;
    99) echo "  other error" ; let other_err=$other_err+1 ;;
    *) echo "  unknown exit status for sg_inq: $res" ; let other_err=$other_err+1 ;;
  esac
done

echo ""
let total_bad_err=$file_err+$inv_opcode+$illeg_req+$medium+$aborted_command
let total_bad_err+=$other_err+$recovered+$sanity+$syntax+$timeout

let total_allow_err=$not_ready+$unit_attention

  echo "total number of bad errors: $total_bad_err "

if [ $total_allow_err -gt 0 ]
  then
  echo "total number of allowable errors: $total_allow_err "
fi

exit $total_bad_err
